Which statement is false?

A. A molecule must be made of at least two atoms.
B. Compounds are made of elements.
C. Two atoms of oxygen make a molecule of oxygen.
D. Chemical bonds form between molecules of solute and solvent.
E. Elements are found in compounds and molecules.


Answer: D

Biology & Microbiology

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If water is scarce, a plant's guard cells will and the stomata will .

A. swell; close B. collapse; open C. collapse; close D. swell; open E. None of the answer choices is correct.

Biology & Microbiology

Select the statement that is TRUE during expiration?

a. Transpulmonary pressure (Ptp)= 0 b. Alveoli pressure (Palv)? atmospheric pressure (Patm)= 0, and Palv = Patm c. Palv is greater than Patm, Palv ? Patm is positive and airflow is outward d. Intrapleural pressure (Pip) becomes more negative

Biology & Microbiology

A scientist has an uncharacterized pea plant. She wants to determine the plant’s genotype for seed color. In order to be certain that she will get conclusive results from a single cross, with what plant could she cross it? Check all that apply.  

_____  a green-seeded pea plant (yy) _____  a yellow-seeded pea plant (YY) _____  itself Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about testcrosses? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Which of the following are NOT part of an

embryo or its related structures?

a. embryonic disk b. amniotic sac c. chorion d. endometrium e. more than one of these are NOT a part of an embryo or its related structures

Biology & Microbiology